Q. The only spillway among the following through which the discharge is almost at its capacity rate even from the start of its functioning is ________________

View solution

Q. An air vent is provided at FRL to break the siphoning action at that level in a ___________________

View solution

Q. Which of the following spillway is designed in India by Ganesh Iyer?

View solution

Q. The crest of a siphon spillway is fixed at ________________

View solution

Q. A siphon spillway is sufficiently independent of the water surface elevation of the reservoir.

View solution

Q. The allowable maximum negative head on an average is equal to __________

View solution

Q. The structure which is not used in a shaft spillway is ________________

View solution

Q. Morning glory is the _____________________________

View solution

Q. For a saddle siphon, the maximum operative head is 4.53 m. The width and height of the throat of the siphon are 5 m and 2.25 m respectively. The coefficient of discharge is 0.90. How many units are required to pass a flood of 350 cumecs? (Assume g = 10 m/s2)

View solution

Q. A siphon spillway in a concrete gravity dam is in the shape of ________________

View solution

Q. The energy dissipation at the toe of the spillway is affected basically by the use of hydraulic jump in _______________________

View solution

Q. The most ideal condition for energy dissipation in the design of spillways is the one when the tail-water rating curve coincides with the jump rating curve at all discharge.

View solution

Q. When the tail-water depths in the river downstream of a spillway are quite low such that the tail-water curve at all discharges lies below the post jump depth curve, then the energy dissipation can be affected best by ___________________

View solution

Q. The device which does not help in energy dissipation at the bottom of a hydraulic structure over which water spills is ________________

View solution

Q. The formation of hydraulic jump at the foot of a spillway is one of the common methods of energy dissipation because ______________________

View solution

Q. A ski-jump bucket is also known as _____________________

View solution

Q. The percentage of energy dissipation in a hydraulic jump increases with the increase in the Froude number.

View solution

Q. Which of the following stilling basin help in stabilizing the flow and improve the jump performance?

View solution

Q. What is the expected solution for the case when the T.W.C is lying above the J.H.C curve at all discharges?

View solution

Q. A sloping apron is provided partly above the river bed and partly below the river bed in case of ____________________________

View solution